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Volumetric Behavior on Interactions of r-Amino Acids with Sodium Acetate, Potassium Acetate, and Calcium Acetate in Aqueous Solutions

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Jamal Akhter Siddique and Saeeda Naqvi*

Editorial: J. Chem. Eng. Data, 55 (8), , p.2930–2934, 2010.


The apparent molar volumes (VΦ) of L-lysine monohydrochloride, L-histidine, and L-arginine in water and
in aqueous of sodium acetate, potassium acetate, and calcium acetate solutions have been determined at
temperatures from (303.15 to 323.15) K from density measurements. The partial molar volumes at infinite
dilution (Vo
2) obtained from VΦ data have been used to calculate the transfer volume (ΔVtr) of amino acids
in water and in the presence of the cosolutes at different temperatures. These parameters have been discussed
in terms of various interactions between the R-amino acids and organic salts in these solutions. The dehydration
effect of sodium, potassium, and calcium acetates has also been discussed.

Cuvinte cheie: Density, Amino acids, Acetate salts,